Memory corruption in Mozilla Firefox - CVE-2018-12359

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Main Vulnerability Database Vulnerabilities #VU13478

Memory corruption in Mozilla Firefox - CVE-2018-12359

Published: June 26, 2018 / Updated: June 27, 2018


Vulnerability identifier: #VU13478
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-12359
CWE-ID: CWE-120
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to buffer overflow when rendering canvas content while adjusting the height and width of the <canvas> element dynamically. A remote unauthenticated attacker can trick the victim into visiting a specially crafted website, trigger out-of-bounds write and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

Mozilla Firefox
Firefox ESR
Gentoo Linux
Arch Linux
Debian Linux
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Power
Red Hat Enterprise Linux for ARM
SUSE Linux
Slackware Linux
Opensuse
openSUSE Leap
Mozilla Thunderbird

How to mitigate CVE-2018-12359

Update to version 61.0.

Mozilla Firefox - update to 61.0
Mozilla Thunderbird - update to 60.0

External References

Related Security Bulletins